Hi, wanted to give a status update.
As of Sunday, all platforms are now supported out of the box in Arduino CMake. You can build on Linux, Windows and Mac OS X.
Instruction for setting up the environment are on the main project page on GitHub (GitHub - queezythegreat/arduino-cmake: Arduino CMake Build system).
The only thing that is left to be done is to create Sketch conversion, so that I works exactly like the Arduino IDE.
If somebody is interested in instruction for getting a Eclipse environment up and running please let me know, I'll add it to the documentation.
Bye for now,
QueezyTheGreat